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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,219 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS32928US | ITECHTOOL-ASN-LAH - ITechTool Incorporated | 256 | — | 1 |
| AS32847US | LMGINC-ORL - LMG, Inc | 256 | — | 1 |
| AS40234US | RAPIDPARTS - Rapidparts, Inc. | 256 | — | 1 |
| AS11089US | ERGON-NETWORK - ERGON | 256 | — | 1 |
| AS401748US | ASRINFOPRO-LLC - ASR INFOPRO LLC | 256 | — | 1 |
| AS216102US | XeroGroup_LLC XeroGroup LLC | 256 | — | 1 |
| AS33630US | WCSR - WOMBLE CARLYLE SANDRIDGE & RICE, LLP | 256 | — | 1 |
| AS401510US | IMG-ACADEMY - IMG Academy, LLC | 256 | 256 | 2 |
| AS30477US | SHO - Shorenstein Realty Services | 256 | — | 1 |
| AS398443US | NWCC - Northwest Mississippi Community College | 256 | — | 1 |
| AS5632US | GORDONCOLLEGE - Gordon College | 256 | — | 1 |
| AS7213US | MASONCOMPANIESINC - Mason Companies, Inc. | 256 | — | 1 |
| AS27214US | INSITU-AS - Insitu, Inc | 256 | — | 1 |
| AS395618US | QUEENS-HEALTH-SYSTEM - The Queen's Medical Center | 256 | — | 1 |
| AS394108US | GMS-AS394108 - Gypsum Management and Supply, Inc. | 256 | — | 1 |
| AS12060US | NAPCFL - NAP OF CENTRAL FLORIDA, INC | 256 | — | 1 |
| AS62546US | FRISCOTXISD - Frisco Independent School District | 256 | — | 1 |
| AS20078US | PIM-ASN - Pzena Investment Management, L.L.C. | 256 | — | 1 |
| AS20402US | LL-942-20402 - LEDVANCE | 256 | — | 1 |
| AS23439US | KQED-ORG - KQED Inc. | 256 | — | 1 |
| AS40868US | FCEC-ASN - Fannin County Electric Cooperative, Inc. | 256 | — | 1 |
| AS395933US | YRMC-AS - Dignity Health, Yavapai Regional Medical Center | 256 | — | 1 |
| AS398184US | HIGHSCORE-ASN-1 - Highscore, Inc | 256 | — | 1 |
| AS16725US | PHILLYIX-CACHES - Philadelphia Internet Exchange | 256 | 256 | 2 |
| AS15338US | CEROBI - CEROBI LLC | 256 | — | 1 |
| AS33699US | RUSSELL-MARKETING-RESEARCH - Russell Marketing Research, Inc. | 256 | — | 1 |
| AS200257US | UserDepth-AS UserDepth LLC | 256 | — | 1 |
| AS393840US | CAG-AS01 - Chapman Automotive Group | 256 | — | 1 |
| AS63433US | BRIGHTWOOD CAPITAL ASN - Brightwood Capital Advisors, LLC | 256 | — | 1 |
| AS19929US | VASTCOMM - VAST COMMUNICATIONS LLC | 256 | — | 1 |
| AS26226US | LOYOL-1-ASN - Loyola High School of Los Angeles | 256 | — | 1 |
| AS218880US | Turbyte Turbyte LLC | 256 | — | 1 |
| AS401471US | TICKETNETWORK-DC-01 - TicketNetwork Inc. | 256 | — | 1 |
| AS395010US | OPC-PHX - Oracle Corporation | 256 | — | 1 |
| AS47040US | DELTAPRODUCTS-AS - Delta Products Corporation | 256 | — | 1 |
| AS63135US | TABOR-COLLEGE-01 - Tabor College, Inc. | 256 | — | 1 |
| AS393876US | AS-PMGAA - Phoenix-Mesa Gateway Airport Authority | 256 | — | 1 |
| AS401185US | EVOLUTIONFIBER-FL - Evolution Fiber LLC | 256 | — | 1 |
| AS397794US | APPLAUSE-MARLBORO - Applause | 256 | — | 1 |
| AS20462US | OPULENT-CLOUD - Opulent Cloud | 256 | — | 1 |
| AS394683US | ACHE - Arkansas Colleges of Health Education | 256 | — | 1 |
| AS402132US | MIXHITS-RADIO - Mixhits Radio, LLC | 256 | — | 1 |
| AS54016US | DN-VA - Diebold Nixdorf, Incorporated | 256 | — | 1 |
| AS22638US | PHILORCH-ASN - The Philadelphia Orchestra Association | 256 | — | 1 |
| AS394525US | DF-INTERNET-TX - Dean Foods Company | 256 | — | 1 |
| AS398187US | NWTS-FERNDALE-01 - NW Technology | 256 | — | 1 |